E:
Energy Information Administration (EIA) - Provides policy-independent data, forecasts, and analyses regarding energy and its interaction with the economy and the environment [Department of Energy (DOE)]

T:
TSA: Helpful Hints for Holiday Travelers - Helpful hints to be prepared for security before traveling [Department of Homeland Security, Transportation Security Administration]

Travelers' Health - Official U.S. government health recommendations for traveling [Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC)]